Machine for washing sand.



No. 810,251. PATENTED JAN. 16, 1906. R. 0.. BIDWELL.

MACHINE FOR WASHING SAND.

APPLICATION FILED JULY 12,1905.

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Quanta PATENTED JAN. 16, 1906.

R. O. BIDWELL.

MACHINE FOR WASHING SAND.

APPLIUATION FILED JULYIZ, 1905.

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PATENTED' JAN. 16, 1906.

BIDWELL. MACHINE FOR WASHING SAND.

APPLICATION FILED JULY 12. 1905.

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gluu euloz 252 0 26116! QB aii RICHARD O. BIDWELL, OF SOUTH VINELAND, NEW JERSEY.

MACHINE FOR WASHING SAND.

Specification of Letters Patent.

Patented Jan. 16, 1906.

Application filed July 12, 1905. Serial No- 269,391.

To all whom/it may concern.-

Be it known that I, RICHARD O. BIDWELL, a citizen of the United States, residing at South Vineland, in the county of Cumberland and State of New Jersey, have invented new and useful Improvements in Machines for Washing Sand, of which the following is a specification.

My invention relates to improvements in machines more particularly for washing or cleansing sand.

It has for its object to provide for readily and effectively cleansing sand and to accomplish this in a simple and expeditious manner; and to these ends said invention consists of certain structural features, substantially as.

hereinafter fully disclosed, and specifically pointed out by the claims.

In the accompanying drawings, illustrating the preferred embodiment of my invention, Figure 1 is a broken-away plan view thereof. Fig. 1 is abroken-away plan view in continuation of Fig. 1. Fig. 2 is a longitudinal section of the invention, also broken away. Fig. 2 is a broken-away similar view in continuation of Fig. 2.

In the disclosure of my invention I provide a number of suitable tanks or receptacles 1, 2, 3, 4, 5, and 6, all continuously connected or joined together and effective for carrying out, as presently more fully seen, the respective ends for which they are designed. Preferably these tanks, or connected series thereof, are arranged with relation to the ground-surface as indicated, the water level or line also being suggested by dotted lines and the course of the sand and water, of partially-clean sand, of clean sand, and of waste being designated by arrows. The tanks 1 and 3 are arranged about at the same general moderate angle of inclination, the end tanks 4 and 5 have a much greater declination than these, but in opposite directions thereto and to one'another, and the tank 2 has about the same general angle of inclination as tanks 1 and 3, but in an opposite direction, the purpose of which disposition of parts will be apparent hereinafter. The tank 1 has arranged therein partition members or sections 1*, practically subdividing it longitudinally on a central line, with their opposed ends separated from one another, as at 1., to provide for the passage of the water and sand from side to side. The

flected trough or chute 3, delivering sand and water into the tank 1 a short distance from the upper end of the latter and for returning surface water to tank 1. The tank 1 has also a lateral trough or chute extension 1*, delivering surface water into the settling-tank 6, the bottoms of these troughs 3 1 being arranged to occupy a position about four inches below the water-line in their respective tanks. A waste trough or outlet 2 is suitably provided for the tank 2, which outlet encroaching, as it were, upon the tank 6 is partitioned off therefrom by a preferably diagonally-arranged end portion 6 of said latter tank.

Endless belts of elevators or blades 7 are suitably provided for the several tanks, excepting for the settling-tank, the same encompassing sprocket-wheels or pulleys 7 with their shafts suitably supported in position and driven in any well-known way, as will be readily understood, preferably two such endless belts of elevators being provided for each of the tanks 1, 2, and 3 and one for each of the tanks 4 and 5.

Superposed with respect to the tank 1 near its lower end is a rotary cylindric sieve or screen 8, slightly inclined toward its discharging or delivering end, arranged beyond said tank, and which sieve or screen is equipped to have motion communicated thereto in the usual way and which has discharging thereinto a hopper 9, itself having a sand feeding or supplying pipe 10 delivering thereinto.

A water-supply pipe 11 is suitably arranged to deliver from above water into the tank 3 for the washing or cleansing of the sand contained in the tanks, the various routes of the sand at its diflerent stages of washing and the passage of the water therewith through the different tanks under the action of the endless belts of elevators or carriers and the disposal of the waste all being suggested, as above noted, by the arrows. Stating the matter more in detail, sand and water in their initial stage are indicated, as relates to their course or movement, by the single-headed or barb'ed arrows at the right in the tank 1 that of partially-clean sand bythe double-headed or barbed arrows at the left therein that of clean sand by the arrows having a still greater number of barbs in the tanks 2, 3, 4, and'5, and that of. the waste by the arrow having the maximum number of barbs, as at the entrance of the spout or outlet 2 Thus it will be seen that the apparatus is effective to deliver clean sand at two different points simultaneously after having passed it over an extended course or area or from tank to tank, thereby securing the maximum cleansing action with the maximum output of cleaned sand in a relatively short time.

By the arrangement of the baffling partition 6* between the tanks 2 and 6 the otherwise rapid flow of the water is retarded, hav ing the effect to precipitate a large part of the sand to the bottom of the settling-tank 6. In the end tanks 4 and 5 the wide blades or carriers are effective to scrape the sand from the lower ends thereof, where it is received or falls from the tanks 2 and 3, and effectively conduct or elevate it to the discharging upper ends of said tanks 4 and 5.

It will be understood that the tanks may be. varied as to their dimensions, more particularly in length, and their number increased, as well as varied in inclination, that the size of the pumping apparatus it may be desired to employ in connection therewith, as at the receiving end of the pipe 10, maybe increased or diminished, and that the number of the endless-belt elevators may be increased, and be made either single or double.

Of course the speed of the machinery operating the elevators should be regulated according to the amount of sand and water pumped or otherwise introduced into the tanks, as well as the specific gravity of the sand, (fine or coarse,) which controls the sinking action thereof in the water, other incidental conditions of course being given due weight.

I claim 1. A device of the character described, comprising a number of inclined tanks or re ceptacles all arranged in longitudinal alinement with each other and one having one end overhanging the contiguous end of the other tank, and successive ones having lateral chutes or troughs discharging or delivering one into the other, means effective to take the contents of one tank to another and finally discharge the same from each end of the series of tanks, and means for feeding the material to be treated to one of the intermediate tanks.

2. A device of the character described, comprising a number of inclined tanks or receptacles, all arranged in longitudinal alinement with each other and one having one end overhanging the contiguous end of the other tank and successive ones having lateral chutes or troughs discharging or delivering one into the other, endless belts of elevators arranged to take the contents of one tank to another and finally discharge the same from each end of the series of tanks and means for feeding the material to be treated to one of the intermediate tanks.

3. A device of the character described, comprising a number of inclined tanks or receptacles all arranged in longitudinal alinement with each other and one having one end overhanging the contiguous end of the other tank and effective to deliver one into the other and a settling-tank arranged intermediately of said inclined tanks, successive tanks having lateral troughs or chutes, one delivering into an adjoining inclined tank and the other delivering into said settlingtank, endless belts of elevators arranged to conduct the contents of one tank to the other, and finally dispose of the same and means for feeding the material to be treated to one of the intermediate tanks.

4. A device of the character described, comprising a series of inclined tanks or receptacles, all arranged in longitudinal alinement with each other and one having one end overhanging the contiguous end of the other tank and an intermediate settling-tank supplied from one of said inclined tanks and delivering into another of the latter, said inclined tanks being equipped with endless belts of elevators effective to conduct the contents thereof, one to the other, and finally dispose of the same, and a sieve or screen superposed with relation to an intermediate one of said inclined tanks and adapted to deliver its screened. contents thereinto and its unscreened con tents beyond said tank.

5. A device of the character described, comprising a number of inclined tanks and a settling-tank, one of said inclined tanks having a trough or chute delivering laterally into an adjoining similar tank and a thirdinclined tank delivering in like manner into said settling-tank, two of the intermediate tanks being inclined in the same direction and the third intermediate tank being oppositely inclined about at the same general angle to the latter, and the end tanks being more precipitately inclined than the foregoing tanks and oppositely to one another, endless belts of elevators arranged in connection with said inclined tanks and effective to deliver the contents thereof at the upper ends of said end tanks, and a feeding or supplying sieve delivering its screened contents into one of said intermediate tanks.

In testimony whereof I afliXmy signature in presence of two subscribing witnesses.

RICHARD O. BIDWELL.

Witnesses:

GUEFIELA PANCOAST, HENRY S. ALvonD.

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